Is 1900 a normal year or a leap year? Say the reason again! I don't know who is right or who is wrong. Which one of you will live to 2100, when it will be flat or leap Forget it, I'll decide whose answer to adopt!

Is 1900 a normal year or a leap year? Say the reason again! I don't know who is right or who is wrong. Which one of you will live to 2100, when it will be flat or leap Forget it, I'll decide whose answer to adopt!

A year divisible by 100 but not by 400 is not a leap year
So 1900 was a normal year

Is 2009 a leap year or a normal year?

The leap year algorithm of the Gregorian calendar is: 1) the year is a whole hundred, and it must be a multiple of 400 to be a leap year. 2) the other years can be divided into four is a leap year. The lunar calendar is a little more complicated, leap, which originally means the remainder. It refers to the difference between the calendar year and the earth's running time around the sun

Why is 1896 a leap year and 1900 a normal year?
I want to know this question?

The observation shows that the time of the earth circling the sun is 365.2422 days, so there will be errors in both the solar calendar and the lunar calendar (both take 365 days as a year). For the solar calendar, there will be about one less day every four years (0.2422x4 = 0.9688, about equal to 1). In the next few hundred years, due to the existence of this error, many inconveniences will be caused, such as the time of severe winter, In the 16th century, the cumulative error was 375 days, which was more than one regression year. So the solar calendar was changed again, which stipulated that there was a leap year in every four years, and this day was added to February, which had the least number of days, so the February of leap year had 29 days, Regulations: all years that can be divided by 4 are leap years. For example, 198819921996 are leap years